Posted by **courtney** on Tuesday, September 8, 2009 at 1:38pm.

1. Q: 2|3x-5| when x=(-3)

A: 24

2. Q: |6-x|+4 when x=5

A: 5

_______________

Simplify the expression.

1. (-4)(-x)(x^2)

my answer: 4x^3

2. (24)(-5x)(-x)

my answer: 120x^2

3. -x(4-x)

my answer: -4x-x

4. -4t(t+2)

my answer: -4t^2+(-6t)

5. b^2(4-b^2)

my answer: 4b^2-b^4

6. (c+3c^2)(-c^2)

my answer: -c^3+(-3c^4)

Can you check and see if my answers are right? Any help is appreciated.

- maths -
**bobpursley**, Tuesday, September 8, 2009 at 2:34pm
redo the first one.

then 3,4 are wrong.

- maths -
**courtney**, Tuesday, September 8, 2009 at 2:51pm
3. -4x-x^2

4. -4t^2+(-8t)

please check those again.

and when you say redo number 1, which one do you mean:

a. 2|3x-5| when x=(-3)

or

b. (-4)(-x)(x^2)

thanks!! :)

- maths -
**bobpursley**, Tuesday, September 8, 2009 at 3:09pm
The first one?1. Q: 2|3x-5| when x=(-3)

A: 24

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